A mechanic taking a car for a ride is at least plausibly productive; the mechanic tests the car out to make sure it's running well, no weird noises/etc. Of co

A mechanic taking a car for a ride is at least plausibly productive; the mechanic tests the car out to make sure it's running well, no weird noises/etc. Of course if you just brought the car in for an oil change and not asking them to investigate a weird intermittent noise, I can see why you'd be upset.